Transition coupling device



' Oct- 5 1926. P. PERDIJK TRANSITION COUPLING DEVICE Filed Sept. 21, 1925 IN'IIENTZ/f f l y M r @ct. 5, i926,

n ra- U N i T TRANSITION 'CGUPLING DEVICE.

Application filed September 21, 1925, Serial No. 57,756, and-in the Netherlands March 25, 1924.

This invention hasi'or its object to provide a transition coupling device for use with rolling stock and servesto couple an automatic knuckle. coupler (M. C. B, can coupler) to another type of automatic or non-automatic car coupler.

For this purpose an auxiliary part (missing link) is fixed by means of cars and bolts at one end of the knuckle and at the other end tothe guard arm of the knuckle coupler. A construction is-aimed at by which the cornprcssive and tensile forces are transmitted centrally and regularly to the drawbar head when the transition coupling device is used.

* The auxiliary part may be easily connected to or disconnected from the nose of the knuckle. 1

For coupling to a special type of another coupler the auxiliary part is to be shaped in such a form as to suit the other coupler.

A practical form of construction of the,

present invention will'now be described with reference to the accompanying drawings, in which the auxiliary part is shown, fixed to the head of a normal M. C. B. car coupler and coupled to a central automatic hook coupler.

Referring to these vertical drawings? Fig. 1 is a vertical section, Fig. 2 a plan elevation and Fig. i a side elevation of the combined couplers. Fig. 3 shows a detail or the construction.

The left sides of the Figs. 1, 2 and-4 show an ordinary, normal construction of the automatic central hook coupler. To the head of its drawbar a the hook Z) is pivotally con nected by means of a removable pin 0. The front of the head is formed by the bufferplate (Z. All these details correspond however to the ordinary construction and need not be altered for the present coupling and therefore they are drawn in thin lines.

The drawbar head 6 of the M. C. B. car coupler, drawn merely in outline, is dealt with.

similarly as faras the same does not differ from the ordinary constructions. To thisnormal drawbar head a guard arm having two special ears fare cast. Between these ears the auxiliary part 9 is pivotally connected; the other end is fixed to the nose of the knuckle h in open position. In carrying out this invention the knuckle is provided with a slot, in which the ear 7c of the auxiliary part is fitted. The knuckle as well as the ear is are vertically connected together by a bolt m, in this manner the drawb'ar head 6., the

auxiliary part 9 and the knuckle h practically forming single part. a 7

If the auxiliary part is made of cast steel, the buiterplate (same as d), the drawbar pin (same as c) and the hinges can be cast in one single piece as indicated in the drawing. The front w of the auxiliary part then serves asthe bufieran'd the cast collar 12 for the transmission otthe tensileforces.

lars a and p with which the auxiliary par-t presses against the clutch when under pres sure. The ear is however must have some play and in this way the heavy compressive forces are regularly transmitted to the drawba-r head at the three places f, nand g0.

The tensile'forces in the standard knuckle coupler pass through the knuckle h and are transmitted .to the draw-barhead merely through the knuckle pin y. In the case of coupling the standard coupler to another type of coupler by means of an intermediate link 9 according to the present invention however the tensile forces are carried by the knuckle as well as the ears f of the guard arm. The same forces in this case are distributed over the pins m (y) and z with the result that the latter are under less tension than if the knuckle pin 3 were alone employed and. so, if need be, the pins m and a may be thinner and the hole in the nose of the knuckle smaller.

.The compression and tensile forces thus being transmitted centrally .and regularly the risk of damage to the different parts is less than in the case ofusing intermediate 05 Moreover, the auxiliary part has two col I links, only attached in the: slot of the knuckle or to other parts of the drawbar hea d. 7 a

The opening 9 in the arm of theauxiliary part 9 serves for drainagei It the auxiliary part is removed, the knuckle coupler is immediately capable of being coupled to a standard knuckle coupler as the extra ears 7 at the head of the drawbar and the slot and the hole in the knuckle do not form any obstacle to this.

If there is'sufiicient space, the auxiliary part used not even to be removed; as it will be sutficient to move it aside, as shown in Fig. 2 in dotted lines. In this position it can be fastened for instance by means of a fork r and the pin m. The fork r can be fixed to the drawbar head 6 and for this purpose the head is to be provided with a flat surface 6.

With some carriages the auxiliary part 9, .as shown in dotted lines in Fig. 2, might strike against other parts and in order to prevent this a specially constructed fork r, a little 'bit longer than the normal, one, may be employed. A suitable drawbar head may thusbe constructed uniformly for the whole rolling stock.

It the knuckle is so constructed that in open position the tail u (as indicated in outlines in Figs. 1 and 2) is situated more in the foreground, the bufi er to with the catch ledge a must also be moved in the same direction Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

the knuckle coupler is to be coupled to another one.

2. A transition coupling device for rolling stock adapted to couple an automatic knuckle coupler to an automatic coupler provided with .a central hook pivotally connected on a horizontal pin, comprising an auxiliary part with one end pivotaliy connected to the guard arm of the knuckle coupler, means for fixing the opposite end of the auxiliary part to the nose of the knuckle in open position and means whereby the auxiliary part is moved aside when the knuckle coupler is to be coupled to another one. i

3. In a transition coupling device for rolling stock adapted to couple an automatic knuckle coupler to an automatic coupler provided with a central hook pivot-ally connected on a. horizontal pin, an auxiliary part, attached to the flOIllJ of the lmuckle coupler with one end to the guard armoi the knuckle coupler and with the other end to the nose of the knuckle in open position,

comprising a catch ledge with which the hook and, a buffer with which the buffer of said hook coupler are adapted to engage.

In testimony whereof I have signed my' name to this specification.

Pmrna Penman 

